Digital Signal Processing Questions and Answers
Q1.
If all the poles of H(z) are inside the unit circle, then the system is said to be _______
Answer :
BIBO stable and causal
Q2.
What are the values of z for which the value of X(z)=∞?
Answer :
Poles
Q3.
What is the ROC of the system function H(z) if the discrete time LTI system is BIBO stable?
Answer :
Contain unit circle
Q4.
An ideal filter should have unity gain in their stop band.
Answer :
False
Q5.
A comb filter is a special case of notch filter in which the nulls occur periodically across the frequency band.
Answer :
True
Q6.
In general, a digital system designer has better control of tolerances in a digital signal processing system than an analog system designer who is designing an equivalent analog system.
Answer :
True
Q7.
The finite observation interval for the signal places a limit on the frequency resolution.
Answer :
True
Q8.
Overlap add and Overlap save are the two methods for linear FIR filtering a long sequence on a block-by-block basis using DFT.
Answer :
True
Q9.
How many quantization errors are present in one complex valued multiplication?
Answer :
Four
Q10.
Every fourfold increase in the size N of the DFT requires an additional bit in computational precision to offset the additional quantization errors.
Answer :
True
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